221012322 has 16 divisors (see below), whose sum is σ = 453971712. Its totient is φ = 71679600.

The previous prime is 221012321. The next prime is 221012329. The reversal of 221012322 is 223210122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (221012321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497554 + ... + 497997.

It is an arithmetic number, because the mean of its divisors is an integer number (28373232).

Almost surely, 2^221012322 is an apocalyptic number.

221012322 is an abundant number, since it is smaller than the sum of its proper divisors (232959390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221012322 is a wasteful number, since it uses less digits than its factorization.

221012322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995593.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 221012322 is about 14866.4831752503. The cubic root of 221012322 is about 604.6055959108.

Adding to 221012322 its reverse (223210122), we get a palindrome (444222444).

The spelling of 221012322 in words is "two hundred twenty-one million, twelve thousand, three hundred twenty-two".